<html>
<head>
<title>WebSocket</title>

<style>
	html,body{font:normal 0.9em arial,helvetica;}
	#log {width:440px; height:200px; border:1px solid #7F9DB9; overflow:auto;}
	#msg {width:330px;}
</style>

<script>
var socket;
function init(){
	var host = "ws://139.129.93.46:8000/";
	try{
		socket = new WebSocket(host);
		socket.onopen    = function(msg){ ; };
		socket.onmessage = function(msg){ log(msg.data); };
		socket.onclose   = function(msg){ log("Lose Connection!"); };
	}
	catch(ex){ log(ex); }
	$("msg").focus();
}

function send(){
	var txt,msg;
	txt = $("msg");
	msg = txt.value;
	if(!msg){ alert("Message can not be empty"); return; }
		txt.value="";
		txt.focus();
	try{ 
		socket.send(msg); 
	} 
	catch(ex){ log(ex); }
}

window.onbeforeunload=function(){
	try{ 
		socket.send('quit'); 
		socket.close();
		socket=null;
	}
	catch(ex){ 
		log(ex);
	}
};

function $(id){ return document.getElementById(id); }
function log(msg){ $("log").innerHTML+="<br>"+msg; }
function onkey(event){ if(event.keyCode==13){ send(); } }
</script>

</head>

<body onload="init()">
	<h3>WebSocket</h3>
	<br><br>
	<div id="log"></div>
	<input id="msg" type="textbox" onkeypress="onkey(event)"/>
	<button onclick="send()">send</button>
</body>
</html>